ed. It is less affected by atmospheric conditions, brushes of each pair are connected by a narrow strip During the winter and early spring they are pro- and may be relied on in all weathers for results of some of tin foil attached to the glass. The stationary glass kind, while the frictional… … shaft is provided with a grooved pul- folds, the number being determined Fig. l.-MODIFIED WIMSHUEST INDUCTION MACHINES. ley. A solid shaft placed within the by the number of ribs or veins. For tubular shaft, and projecting beyond such folds, however, there would be the ends thereof, carries upon…
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